Salt Lake City, UT weather in August
August in Salt Lake City: hot and mostly dry. Highs 92°F, lows 67°F, rain on about 5 days. This is the peak of the warm season in Salt Lake City. Midday heat is the main thing to plan around.
- Normal high
- 92°F
- Normal low
- 67°F
- Wet days
- 5
- 0.6 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 95°F | 87°F |
| Normal low | 70°F | 62°F |
| Chance of a wet day | 15% | 16% |
| Sunrise / sunset | 6:24 am / 8:43 pm | 6:53 am / 8:02 pm |
| Daylight | 14.3 h | 13.1 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical August day
- 6 am67°Fdew point 47°F
- 9 am78°Fdew point 46°F
- Noon86°Fdew point 44°F
- 3 pm89°Fdew point 42°F
- 6 pm87°Fdew point 41°F
- 9 pm76°Fdew point 46°F
NOAA hourly normals (local standard time) from Salt Lake City Intl Airport (4 mi away); average wind 9 mph; clear or few clouds in 39% of daytime hours, mostly cloudy or overcast in 28%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F2 of 31
- Hot dayshigh 90°F or more21 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow5 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 0.6 in; a dry August brings about 0.2 in and a wet one about 0.7 in (25th and 75th percentiles). Days with half an inch or more are rare.
How August varies from year to year
- Warmest August, 1991-20202020: average high 97°F
- Coolest August2014: average high 86°F
- Wettest August2000: 2.0 in
- Driest August1996: 0.02 in
- Highest reading106°F (August 4, 1994)
- Lowest reading42°F (August 26, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 94°F | 92°F | 81°F |
| Normal low | 68°F | 67°F | 56°F |
| Wet days | 4 | 5 | 5 |
| Comfortable days | 1 | 2 | 11 |
| Daylight | 14.8 h | 13.8 h | 12.5 h |
Highs change by -2°F from July and -11°F into September.
Nearby alternatives in August
- Cooler: Park City, UT22 mi · high 83°F · 6 wet days
How Salt Lake City ranks in August
- Normal high97th warmest of 378 cities; 5th of 7 in Utah
- Wet days93rd driest of 378
- Comfortable days175th most of 341
What to pack for Salt Lake City in August
- Light, breathable clothing – highs near 92°F
- Layers – afternoons near 92°F but nights near 67°F
Heating and cooling
August has 2 heating degree days and 441 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Salt Lake City in August?
The normal high is 92°F and the normal low is 67°F. From 1991 to 2020 the hottest August reading was 106°F (August 4, 1994).
Does it rain a lot in Salt Lake City in August?
About 5 days in August have at least 0.01 in of precipitation, and the normal total is 0.6 in. The wettest August in 1991-2020 was in 2000 (2.0 in); the driest was in 1996 (0.02 in).
Is August a good time to visit Salt Lake City?
August ranks 8th of 12 months on our comfort score for Salt Lake City (44 out of 100). It has about 2 comfortable days and about 21 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Salt Lake City Intl Airport (USW00024127), 4.3 mi WNW of the city center, 4,225 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Salt Lake City International Airport (725720-24127), 3.9 mi W of the city center, 4,227 ft . Hourly observations, 1991-2020.